Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Total revenue	$ 19,203,888	$ 21,503,894
Operating expenses:
Cost of product and product-related services revenue	$ 8,911,372	$ 5,090,475
Type of Cost, Good or Service [Extensible List]	htgm:ProductAndProductRelatedServicesMember	htgm:ProductAndProductRelatedServicesMember
Selling, general and administrative	$ 18,682,396	$ 19,974,616
Research and development	10,570,225	12,598,034
Total operating expenses	38,163,993	37,663,125
Operating loss	(18,960,105)	(16,159,231)
Other income (expense):
Interest expense	(957,535)	(901,820)
Interest income	623,355	715,723
Loss on extinguishment of Growth Term Loan		(105,064)
Total other income (expense)	(334,180)	(291,161)
Net loss before income taxes	(19,294,285)	(16,450,392)
Provision for income taxes	(3,379)	(3,526)
Net loss	$ (19,297,664)	$ (16,453,918)
Net loss per share, basic and diluted	$ (0.51)	$ (0.60)
Shares used in computing net loss per share, basic and diluted	38,099,687	27,523,463
Product and Product-related Services
Revenue:
Total revenue	$ 14,632,204	$ 9,121,390
Collaborative Development Services
Revenue:
Total revenue	$ 4,571,684	$ 12,382,504